CN103363907A - Multi-path grating ruler signal acquiring and measuring system - Google Patents
Multi-path grating ruler signal acquiring and measuring system Download PDFInfo
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- CN103363907A CN103363907A CN2013103312551A CN201310331255A CN103363907A CN 103363907 A CN103363907 A CN 103363907A CN 2013103312551 A CN2013103312551 A CN 2013103312551A CN 201310331255 A CN201310331255 A CN 201310331255A CN 103363907 A CN103363907 A CN 103363907A
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Abstract
The invention discloses a multi-path grating ruler signal acquiring and measuring system. The multi-path grating ruler signal acquiring and measuring system comprises a plurality of grating rulers, multiple paths of grating signal acquiring and measuring devices and a computer data acquiring and processing system, wherein the grating rulers are connected with aviation sockets of the multiple paths of grating signal acquiring and measuring devices by grating ruler signal wires; the multiple paths of grating signal acquiring and measuring devices are connected with the computer data acquiring and processing system by signal output connecting wires and high-speed connecting serial ports. According to the multi-path grating ruler signal acquiring and measuring system disclosed by the invention, the grating rulers with different resolutions and ranges can be connected by only setting in the computer data acquiring and processing system; an ARM high-speed processing module is adopted, the system is controlled by a computer, the measuring precision can reach 0.1 micron and the operation is simple; a plurality of acquiring and measuring devices are in series connected by the serial ports and are connected by virtue of one computer by setting the case number of each acquiring and measuring device; each acquiring and measuring device is provided with an aviation socket, so that the aviation sockets of the grating ruler data wires can be conveniently inserted to the acquiring and measuring devices.
Description
Technical field
The present invention relates to a kind of displacement data automatic collecting analysis system, especially a kind of multi-channel Grating chi signals collecting measuring system that applies to geomechanical model test flexible transmission type built-in miniature multi-point displacement data.
Background technology
At present, domestic and international application is existing a variety of in the multi-point displacement method of testing at Practical Project scene, but it is still rare to apply to the miniature multi-point displacement test system of geomechanical model test.
The example of domestic contrast success is the multi-point displacement test system that the Li Zhongkui of Tsing-Hua University teaches the differential transformer type of inventing, and is applied in the cavity group geomechanical model test of degree power station, small stream Lip river.Adopt electric resistance sensor to measure displacement, measuring accuracy is than Gao Keda 0.001mm, but electric resistance sensor is subject to the impact of external electromagnetic field and reduces precision.Can realize automatic data collection, but displacement data automatic collecting analysis system picture is unfriendly, function is simple.
The flexible transmission type built-in miniature multi-point displacement test system (application number is 200810138975.5) that is used for model test of professor Zhu Weishen of Shandong University invention adopts high-precision grating scale as displacement measuring instrument, and precision can reach below the 1 μ m; Multi-point displacement is counted flexible transmission type, and measuring point displacement turns round in the energy real-time testing model test; Have the advantages such as data acquisition process convenience.But there is following shortcoming:
1. signal translating system, data acquisition hardware system (data acquisition cabinet) separate, and the connection of data signal line is inconvenient, is unfavorable for the accurate measurement of displacement of model experiment measurement result;
2. signal acquisition process adopts PLC to carry out, and reaction velocity is slow, and when grating scale moves easy frame losing when very fast, displacement measurement is inaccurate, has a strong impact on test findings;
3. the data collection and analysis software system interface is simpler, only has data zero clearing, data acquisition demonstration and simple history curve function, and the sampling period is non-adjustable.
Summary of the invention
The objective of the invention is for overcoming above-mentioned the deficiencies in the prior art, the multi-channel Grating chi signals collecting measuring system of a kind of easy to operate, powerful, high precision and high-speed response is provided.
For achieving the above object, the present invention adopts following technical proposals:
A kind of multi-channel Grating chi signals collecting measuring system, comprise grating scale, multi-channel Grating signal acquisition and measurement device and computer data acquiring disposal system, a plurality of grating scales are connected with the aviation socket of multi-channel Grating signal acquisition and measurement device by the grating scale signal wire, the multi-channel Grating signal acquisition and measurement device by signal export connecting line, high speed connects serial ports and is connected with the computer data acquiring disposal system.
Outside multilayer isolation gauze and the metal bladder of adopting of the signal wire of described grating scale, the end of described signal wire is provided with aviation plug.
The panel of described multi-channel Grating signal acquisition and measurement device is provided with a plurality of aviation sockets, and the aviation plug of grating scale signal wire end inserts the aviation socket, and grating scale and multi-channel Grating signal acquisition and measurement device are coupled together.
Described multi-channel Grating signal acquisition and measurement device comprises:
Cutoff frequency reaches the high-speed photoelectric coupler of 20MHz, and the signal of grating scale is done the high-speed grating signals collecting;
Phase inverter is done further integer to the grating signal that high-speed photoelectric coupler collects, and the high-speed data module grating signal before that enters the ARM chip with assurance is clean, complete;
The ARM chip, will through phase inverter to the grating signal of signals collecting Shape correction adopt in the ARM chip high speed orthogonal coding acquisition module QEI to do counting through the signal after filtering, the integer, declare to 4 process of frequency multiplication;
Synchronous serial interface SSI is sent to main ARM chip with the data after every a slice ARM chip acquisition process;
Main ARM chip is by RS485 interface and the communication of computer data acquiring disposal system.
Described computer data acquiring disposal system is that the MOXO multi-serial-port card is expanded out a plurality of High Speed Serials, can connect respectively a plurality of vasculums.
Computer data acquiring disposal system of the present invention can arrange the parameter of a plurality of grating data acquisition casees and the displacement signal that gathers is carried out data demonstration, Drawing of Curve, segment data preservation, printing etc.
When the present invention tests the aviation plug of the data line of the multi-channel Grating chi corresponding relation according to the Acquisition Instrument numbering is inserted in the jack of Acquisition Instrument, connect harvester and computing machine by data line, open the computer data acquiring disposal system and can carry out displacement measurement.This system can be achieved as follows function:
1. can gather 8 tunnel, 16 road or 32 road grating scale signal datas;
2. to advance real time record and filing of the data that gather; ,
3. archive data can the EXCEL form derive again in online query;
4. the history curve and the time-history curves that comprise archive data;
5. the data query function is arranged;
6. by user management user's operating right is controlled, prevented maloperation.
7. can carry out to the signal of a plurality of grating data acquisition casees data demonstration, Drawing of Curve, segment data preservation, printing etc.
The present invention compares with similar products at home and abroad has following significant technical advantage:
(1) can connect the grating scale of different resolution and range, in the computer data acquiring disposal system, arrange, only need the chain plug receptacle with the data cable plug update platform of grating scale; Realized the unified combination of grating scale signal translating system, data acquisition, analytic system, can realize Real-Time Monitoring, preservation and the analysis of displacement, and had data derivation, inquiry and an authority function is set.
(2) adopt ARM high speed processing module, sample frequency is applicable to Instantaneous Situation displacement measurement and static displacement and measures up to 20MHz; System adopts computer control, and measuring accuracy can reach 0.1 μ m, friendly interface, directly perceived, easy and simple to handle.
(3) every collection measurement mechanism can be arranged to the different sampling channels such as 8 passages, 16 passages and 32 passages, satisfies different requirement of experiment.
(4) many collection measurement mechanisms can be connected by serial ports, by the machine case number (CN) of every collection measurement mechanism is set, realize that a computing machine is to the connection of many every collection measurement mechanism;
(5) every collection measurement mechanism is provided with aviation plug, and the aviation plug of grating scale data line can insert the collection measurement mechanism easily.The supporting flexible miniature multipoint displacement meter of this cover system can be widely used in the geomechanics layer during similar model test.
Description of drawings
Fig. 1 is principle of the invention block diagram;
Wherein 1, grating scale, 2, the multi-channel Grating signal acquisition and measurement device, 3, the aviation socket, 4, high-speed photoelectric coupler, 5, phase inverter, 6, the ARM chip, 7, synchronous serial interface SSI, 8, main ARM chip, 9, RS485 interface, 10, at a high speed connect serial ports, 12, the computer data acquiring disposal system, 13, grating scale signal wire, 14, signal output connecting line.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
As shown in Figure 1, a kind of multi-channel Grating chi signals collecting measuring system comprises grating scale 1, multi-channel Grating signal acquisition and measurement device 2 and computer data acquiring disposal system 12; A plurality of grating scale 1(can connect 32 the tunnel at most) be connected with the aviation socket 3 of multi-channel Grating signal acquisition and measurement device 2 by grating scale signal wire 13; Multi-channel Grating signal acquisition and measurement device 2 connects serial ports 10 and is connected with computer data acquiring disposal system 12 by signal output connecting line 14, high speed;
Outside multilayer isolation gauze and the metal bladder of adopting of the signal wire of grating scale 1, aviation plug is adopted in the signal wire end.
Be designed with a plurality of aviation sockets 3 on multi-channel Grating signal acquisition and measurement device 2 panels, the aviation plug of grating scale 1 signal wire end inserts aviation socket 3, and grating scale 1 and multi-channel Grating signal acquisition and measurement device 2 are coupled together;
High-speed photoelectric coupler 4 cutoff frequencys are up to 20MHz, the signal of grating scale 1 can be carried out the high-speed grating signals collecting, then carry out further integer by 5 pairs of grating signals that collect of phase inverter, the high-speed data module grating signal before that enters ARM chip 6 with assurance is clean, complete, thereby has greatly improved reliability and the anti-interference of signals collecting.
ARM chip 6 will adopt through the grating signal that the signals collecting shaping unit is processed in the ARM chip high speed orthogonal coding acquisition module QEI to count through the signal after filtering, the integer, declare to 4 process of frequency multiplication.
The function of synchronous serial interface SSI7 is every a slice ARM chip 6 to be crossed synchronous serial interface SSI7 to the data communication device after the acquisition process be sent to main ARM chip 8.
Main ARM chip 8 carries out communication by RS485 interface 9 and computer data acquiring disposal system 12.The MOXO multi-serial-port card that wherein utilizes Taiwan to produce in computer data acquiring disposal system 12 is expanded out a plurality of high speeds and is connected serial ports 10(1 and turn 4,1 and turn 8,1 and turn 16 etc.) can connect respectively a plurality of vasculums.
Computer data acquiring disposal system 12 can arrange the parameter of a plurality of grating data acquisition casees 2 and the displacement signal that gathers is carried out data demonstration, Drawing of Curve, segment data preservation, printing etc.
When the present invention tests the aviation plug of the data line of the multi-channel Grating chis such as the multichannel corresponding relation according to the Acquisition Instrument numbering is inserted in the jack of Acquisition Instrument, connect harvester and computer data acquiring disposal system by data line, open the computer data acquiring disposal system and can carry out displacement measurement.This system can be achieved as follows function:
1. can gather 8 tunnel, 16 road or 32 road grating scale signal datas;
2. to advance real time record and filing of the data that gather; ,
3. archive data can the EXCEL form derive again in online query;
4. the history curve and the time-history curves that comprise archive data;
5. the data query function is arranged;
6. by user management user's operating right is controlled, prevented maloperation.
7. can carry out to the signal of a plurality of grating data acquisition casees data demonstration, Drawing of Curve, segment data preservation, printing etc.
Although above-mentionedly by reference to the accompanying drawings the specific embodiment of the present invention is described; but be not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection scope of the present invention.
Claims (5)
1. multi-channel Grating chi signals collecting measuring system, it is characterized in that, comprise grating scale, multi-channel Grating signal acquisition and measurement device and computer data acquiring disposal system, a plurality of grating scales are connected with the aviation socket of multi-channel Grating signal acquisition and measurement device by the grating scale signal wire, the multi-channel Grating signal acquisition and measurement device by signal export connecting line, high speed connects serial ports and is connected with the computer data acquiring disposal system.
2. the system as claimed in claim 1 is characterized in that, outside multilayer isolation gauze and the metal bladder of adopting of the signal wire of described grating scale, and the end of described signal wire is provided with aviation plug.
3. system as claimed in claim 2, it is characterized in that, the panel of described multi-channel Grating signal acquisition and measurement device is provided with a plurality of aviation sockets, and the aviation plug of grating scale signal wire end inserts the aviation socket, and grating scale and multi-channel Grating signal acquisition and measurement device are coupled together.
4. the system as claimed in claim 1 is characterized in that, described multi-channel Grating signal acquisition and measurement device comprises:
Cutoff frequency reaches the high-speed photoelectric coupler of 20MHz, and the signal of grating scale is done the high-speed grating signals collecting;
Phase inverter is done further integer to the grating signal that high-speed photoelectric coupler collects, and the high-speed data module grating signal before that enters the ARM chip with assurance is clean, complete;
The ARM chip, will through phase inverter to the grating signal of signals collecting Shape correction adopt in the ARM chip high speed orthogonal coding acquisition module QEI to do counting through the signal after filtering, the integer, declare to 4 process of frequency multiplication;
Synchronous serial interface SSI is sent to main ARM chip with the data after every a slice ARM chip acquisition process;
Main ARM chip is by RS485 interface and the communication of computer data acquiring disposal system.
5. the system as claimed in claim 1 is characterized in that, described computer data acquiring disposal system is that the MOXO multi-serial-port card is expanded out a plurality of High Speed Serials, can connect respectively a plurality of vasculums.
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| CN2013103312551A CN103363907A (en) | 2013-08-01 | 2013-08-01 | Multi-path grating ruler signal acquiring and measuring system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792032A (en) * | 2014-01-23 | 2014-05-14 | 河海大学 | Device for monitoring stress change of horizontal sliding door hanging rod |
| CN103995278A (en) * | 2014-05-07 | 2014-08-20 | 东北大学 | Double-energy linear array detector for X-ray safety check device |
| CN109541251A (en) * | 2019-01-03 | 2019-03-29 | 苏州汶颢微流控技术股份有限公司 | Motor speed section measuring method and measuring device |
| CN110260797A (en) * | 2019-06-18 | 2019-09-20 | 西安交通大学 | It is a kind of applied to perseverance/speed change grating signal adaptive filter method |
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| WO1995027917A1 (en) * | 1994-04-11 | 1995-10-19 | Leica Ag | Method of determining the position of a feature on an object relative to a surgical microscope and a device for carrying out the method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792032A (en) * | 2014-01-23 | 2014-05-14 | 河海大学 | Device for monitoring stress change of horizontal sliding door hanging rod |
| CN103995278A (en) * | 2014-05-07 | 2014-08-20 | 东北大学 | Double-energy linear array detector for X-ray safety check device |
| CN109541251A (en) * | 2019-01-03 | 2019-03-29 | 苏州汶颢微流控技术股份有限公司 | Motor speed section measuring method and measuring device |
| CN110260797A (en) * | 2019-06-18 | 2019-09-20 | 西安交通大学 | It is a kind of applied to perseverance/speed change grating signal adaptive filter method |
| CN110260797B (en) * | 2019-06-18 | 2020-06-26 | 西安交通大学 | Adaptive filtering method applied to constant/variable-speed grating signals |
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Application publication date: 20131023 |